Raspberry plant named &#39;PS-1852&#39;

ABSTRACT

This invention relates to a new and distinct variety of raspberry plant named ‘PS-1852’. The new variety is primarily adapted to the growing conditions of the central coast of California and is characterized by the following: large upright primocanes, late fall primocane production, early spring floricane production, large conical berries, with nearly ⅔ of the total production coming from the floricane. Foliage is strongly concave, medium green; possessing very strong rugosity, and always 3-foliate. Primocanes have a weak waxy coat, dense thorns, and weak to medium anthocyanin coloration.

LATIN NAME OF THE GENUS AND SPECIES OF THE PLANT CLAIMED

Rubus idaeus

VARIETY DENOMINATION

‘PS-1852’

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct raspberry variety designated as ‘PS-1852’. This new variety is a result of a controlled cross made by the inventor, Stephen M. Ackerman, in 1995 between raspberry variety ‘PS-1094’ (an unpatented Plant Sciences, Inc. selection) and raspberry variety ‘PS-1316’ (an unpatented Plant Sciences, Inc. selection). The variety is botanically known as Rubus idaeus.

The seedling resulting from the aforementioned cross was asexually propagated by dormant canes in Santa Cruz County, California and was subsequently selected by the inventor from a controlled breeding plot in Watsonville, Calif. in 1997. After its selection, the new variety was further asexually propagated by dormant canes, roots and non-dormant root shoot cuttings in both Santa Cruz County, California and San Joaquin County, California. The new variety was then extensively tested over the next several years in fruiting fields in Santa Cruz County, California. This propagation has demonstrated that the combination of traits disclosed herein as characterizing the new variety are fixed and remain true to type through successive generations of asexual reproduction.

BRIEF SUMMARY OF THE INVENTION

‘PS-1852’ is primarily adapted to the climate and growing conditions of the central coast of California. This region provides the necessary year-round temperatures required for it to produce and maintain a strong vigorous plant and to remain in fruit production from August through December on primocanes and in the ensuing year from May through July on the floricanes. The following traits have been repeatedly observed and are determined to be unique characteristics of ‘PS-1852’, which in combination distinguish this raspberry plant as a new and distinct variety:

-   -   1. Large plant size;     -   2. Late fall primocane production;     -   3. Early spring floricane production; and     -   4. Large fruit size.

The raspberry varieties that are believed to be most closely related to the new raspberry variety ‘PS-1852’ are the raspberry variety ‘PS-1049’ (patented, U.S. Plant Pat. No. 10,142), and the raspberry variety ‘PS-1703’ (patented, U.S. Plant Pat. No. 15,151).

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, ‘PS-1852’ differs by the following combination of characteristics described in Table 1: TABLE 1 ‘PS-1049’ Characteristic ‘PS-1852’ (US PP10,142) 1. Primocane length (m) 2.2 2.0 2. Basal diameter (mm) 18.6 16.4 3. Intemode length 3.8 5.0 of central ⅓ (cm) 4. Predominate number of Always 3 Equal 3-5 leaflets 5. Leaf color (upper side) 7.5 GY ¾ to 3/6 7.5 GY ¾ to 4/4 6. Leaf shape (cross section) Strongly concave Slightly concave 7. Rugosity Very strong Medium 8. Percent of primocane fruiting 27% 40% 9. Primocane color 10Y 7/4 to 7/6 5 GY 7/4 to 6/4 10. Floricane color 2.5 YR ¾ to 5 YR 4/4 to 4/6 7.5 YR 4/6 11. Bloom intensity Weak Strong 12. Thorn density per cm 7.2 4.0 of central ⅓ ‘PS-1703’ Characteristic (US PP15,151) 1. Primocane length (m) 1.8 2. Basal diameter (mm) 15.3 3. Intemode length 5.8 of central ⅓ (cm) 4. Predominate number of Mostly 5 leaflets 5. Leaf color (upper side) 7.5 GY 2/4 to ¾ 6. Leaf shape (cross section) Slightly concave to slightly convex 7. Rugosity Medium to strong 8. Percent of primocane fruiting 46% 9. Primocane color 7.5 GY 6/2 to 6/4 10. Floricane color 5 YR 4/4 to 4/6 11. Bloom intensity Medium to strong 12. Thorn density per cm 4.5 of central ⅓

For identification a series of molecular markers have been determined for this new variety.

BRIEF DESCRIPTIONS OF THE DRAWINGS

The accompanying color photographs illustrate the overall appearance of typical specimens of the new raspberry variety, ‘PS-1852’, at various stages of development as true as reasonably possible with color reproductions of this type. Color in the photographs may differ slightly from the color value cited in the detailed botanical description which accurately describes the color of ‘PS-1852’. The depicted plant and plant parts of the new raspberry variety ‘PS-1852’ were taken in Watsonville, Calif., and are approximately 7 to 10 months old:

FIG. 1 shows typical primocane plant characteristics taken in the month of August;

FIG. 2 shows a close-up of typical primocane foliage characteristics taken in the month of August;

FIG. 3 shows typical primocane field fruiting characteristics taken in the month of August; and

FIG. 4 shows typical primocane fruit characteristics taken in the month of October.

DETAILED BOTANICAL DESCRIPTION

‘PS-1852’ has not been observed under all possible environmental conditions. The characteristics of the new variety may vary in detail, depending upon variations in environmental factors, including weather (temperature, humidity and light intensity), day length, soil type, and location.

The aforementioned photographs, together with the following description of the new raspberry variety ‘PS-1852’, unless otherwise noted, is based on observations taken during the 2006 growing season in Watsonville, Calif. Primocane measurements and ratings were taken from plants of ‘PS-1852’ dug from a nursery located in San Joaquin County, California, during the middle of December, 2005, and planted approximately 3 to 4 weeks later in Watsonville, Calif. The approximate age of the observed primocane plants is 7 to 8 months. Floricane measurements and ratings were taken from plants of ‘PS-1852’ dug from a nursery located in San Joaquin County, California, during the middle of December, 2004, and planted approximately 3 to 4 weeks later in Watsonville, Calif. The approximate age of the observed floricane plants is 16 to 18 months. Yield observations and fruit quality characteristics are averaged from three years of data collected from the 2004 through 2006 production seasons. Flower measurements and characteristics are from secondary flowers unless otherwise noted. Fruit characteristics and measurements are from secondary fruit unless otherwise noted. Foliage characteristics and measurements are from 3-foliate foliage unless otherwise noted.

Color terminology where noted follows the Munsell Book of Colors, Munsell Color, Baltimore, Md. (1976).

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, the fruit characteristics of ‘PS-1852’ differ as described in Table 2: TABLE 2 FRUIT CHARACTERISTICS ‘PS-1049’ Characteristic ‘PS-1852’ (US PP10,142) Color mature fruit 5R 3/6 to ⅜ 5 R 3/6 to ⅜ Medium red Medium red Color achenes 10 YR 7/4 to 8/4 10 YR 7/4 to 8/4 Fruit Length (cm) 2.3 1.9 Fruit Width (cm) 2.0 1.8 Length/Width Ratio 1.1 1.1 Slightly longer Slightly longer than broad than broad Seed weight (mg) 1.8 1.5 Druplets per berry 113 104 Fruit size Large Medium Predominant shape Conical Conical Evenness of color Slightly uneven Even Glossiness Medium Medium Adherence of receptacle Weak Weak Firmness of flesh Firm Very firm Firmness of skin Medium Very firm ‘PS-1703’ Characteristic (US PP15,151) Color mature fruit 5 R 3/10 to ⅜ Medium red Color achenes 10 YR 7/4 to 8/4 Fruit Length (cm) 2.1 Fruit Width (cm) 1.8 Length/Width Ratio 1.2 Slightly longer than broad Seed weight (mg) 1.6 Druplets per berry 113 Fruit size Medium Predominant shape Conical Evenness of color Even Glossiness Strong Adherence of receptacle Weak Firmness of flesh Firm Firmness of skin Medium

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, the plant characteristics of ‘PS-1852’ differ as described in Table 3: TABLE 3 PLANT CHARACTERISTICS ‘PS-1049’ Characteristic ‘PS-1852’ (US PP10,142) General: Habit Upright Semi-upright Size Large Medium Productivity Medium High Self fruitfulness Yes Yes Type of bearing Everbearing Everbearing Primocane: Color 10 Y 7/4 to 7/6 5 GY 7/4 to 6/4 Medium yellow- Light green-yellow green Length (m) 2.2 2.0 Basal diameter (mm) 18.6 16.4 Diameter central ⅓ (mm) 12.3 11.3 Lateral length (cm) 46.3 57.4 No. fruiting laterals 10 14 per cane % of cane length fruiting 27% 40% Internode length 3.8 5.0 (of central ⅓ cm) Anthocyanin coloration Weak to medium Weak to medium Pubescence Absent Absent Length of vegetative bud Short to Medium Short to Medium Strength of waxy coat Weak Strong Time of flowering Late Medium Time of fruiting Late Medium Length of fruiting season Medium Long % of total yield 38% 54% Flowering period Early August to Late June to Late November Late November Harvest period Early September to Late July to Late December Late December Primocane fruit weight (g) 3.7 2.8 Primocane yield (g/plant) 1,037 1,841 Young Shoots: Number Medium Medium Anthocyanin coloration Present Present Anthocyanin intensity Very weak to weak Very weak to weak Thorns: Color 7.5 RP 3/6 7.5 RP 3/6 Purple Purple Length central ⅓ (mm) 2.3 2.2 Presence on cane Present Present Density on cane Medium to dense Medium Texture Rigid Rigid Attitude of the tip Horizontal Horizontal Floricane: Color 2.5 YR ¾ to 5 YR 4/4 to 4/6 7.5 YR 4/6 Brown Brownish-purple Length (m) 1.6 1.3 Length vegetative bud (mm) Short Long Strength of waxy coat Weak Strong Fruiting lateral attitude Erect to semi- Erect to semi- erect erect Time bud burst Medium to late Medium Time of flowering Early Medium Time of fruiting Early Medium Length of fruiting season Medium to long Medium to long % of total yield 62% 46% Flowering period Early April to Late April to Late June Late June Harvest period Early May to Late May to Late July Late July Floricane fruit weight (g) 3.2 2.6 Floricane yield (g/plant) 1,684 1,582 ‘PS-1703’ Characteristic (US PP15,151) General: Habit Semi-upright Size Medium Productivity High Self fruitfulness Yes Type of bearing Everbearing Primocane: Color 7.5 GY 6/2 to 6/4 Medium to light green-yellow Length (m) 1.8 Basal diameter (mm) 15.3 Diameter central ⅓ (mm) 10.9 Lateral length (cm) 64.6 No. fruiting laterals 13 per cane % of cane length fruiting 46% Internode length 5.8 (of central ⅓ cm) Anthocyanin coloration Medium to strong Pubescence Absent Length of vegetative bud Short to medium Strength of waxy coat Medium to strong Time of flowering Early Time of fruiting Early Length of fruiting season Long % of total yield 52% Flowering period Early June to Late November Harvest period Early July to Late December Primocane fruit weight (g) 3.1 Primocane yield (g/plant) 1,956 Young Shoots: Number Medium Anthocyanin coloration Present Anthocyanin intensity Absent to very weak Thorns: Color 7.5 RP 3/6 Purple Length central ⅓ (mm) 1.7 Presence on cane Present Density on cane Medium Texture Rigid Attitude of the tip Horizontal Floricane: Color 5 YR 4/4 to 4/6 Brown Length (m) 1.1 Length vegetative bud (mm) Short Strength of waxy coat Medium to strong Fruiting lateral attitude Horizontal to drooping Time bud burst Medium Time of flowering Medium Time of fruiting Medium Length of fruiting season Medium to long % of total yield 48% Flowering period Mid April to Late June Harvest period Early May to Late July Floricane fruit weight (g) 2.8 Floricane yield (g/plant) 1,811

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, the foliage characteristics of ‘PS-1852’ differ as described in Table 4: TABLE 4 FOLIAGE CHARACTERISTICS ‘PS-1049’ ‘PS-1852’ (US PP10,142) Characteristic (3 Foliate) (3 Foliate) General: Color of upper surface 7.5 GY ¾ to 3/6 7.5 GY ¾ to 4/4 Medium green Medium green yellow Color of lower surface 5 GY 6/2 to 7/2 5 GY 5/4 to 6/4 Light to Pale Pale yellow-green grey-green Shape in cross section Strongly concave Slightly concave Arrangement Compound Compound Relief between veins Very strong Medium Glossiness Weak Weak Number of leaflets/leaf Always 3 Equal 3-5 Terminal Leaflet: Length (cm) 13.6 15.2 Width (cm) 10.0 10.9 Length/Width Ratio 1.4 1.4 Longer than broad Longer than broad Size Medium to large Medium to large Shape Cordate Cordate Shape of base Cordate Cordate Shape of tip Acuminate Acuminate Margins Biserrate Biserrate Lateral Leaflet: Length (cm) 11.3 12.4 Width (cm) 7.4 7.6 Rachis length (cm) 3.8 3.9 Orientation Opposite Opposite Arrangement Compound Compound Shape Ovate Ovate Overlapping Touching Touching Shape of the base Acute rounded Oblique rounded Shape of the tip Acuminate Acuminate Margins Biserrate Biserrate Petiole: Length (cm) 5.1 6.0 Width (mm) 3.4 3.0 Thorn presence Yes Yes Thorn orientation Erect Erect Anthocyanin coloration Absent to Absent to of upper surface very weak very weak Pigmentation of Light green- Light green- lower surface yellow yellow Stipule length (cm) 1.1 1.1 Stipule orientation Erect Erect ‘PS-1703’ (US PP15,151) Characteristic (5 Foliate) General: Color of upper surface 7.5 GY 2/4 to ¾ Medium to Dark Green Color of lower surface 5 GY 6/2 to 7/2 Light to Pale grey-green Shape in cross section Slightly concave to slightly convex Arrangement Compound Relief between veins Medium to strong Glossiness Medium Number of leaflets/leaf Mostly 5 Terminal Leaflet: Length (cm) 13.5 Width (cm) 7.0 Length/Width Ratio 1.9 Much longer than broad Size Medium to small Shape Lobed oblique Shape of base Acute Shape of tip Acuminate Margins Biserrate Lateral Leaflet: Length (cm) 11.6 Width (cm) 7.0 Rachis length (cm) 1.4 Orientation Opposite Arrangement Compound Shape Oblique Overlapping Free Shape of the base Acute oblique Shape of the tip Acuminate Margins Biserrate Petiole: Length (cm) 6.2 Width (mm) 3.5 Thorn presence Yes Thorn orientation Erect Anthocyanin coloration Medium to of upper surface strong Pigmentation of Light green- lower surface yellow Stipule length (cm) 1.1 Stipule orientation Erect

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, the flower characteristics of ‘PS-1852’ differ as described in Table 5: TABLE 5 FLOWER CHARACTERISTICS ‘PS-1049’ Characteristic ‘PS-1852’ (US PP10,142) Petal color N 9.5/90% R to N 9.5/90% R to N 9.25/84.2% R N 9.25/84.2% R White White Flower diameter (cm) 2.0 1.7 Size Medium Medium Petal Length (mm) 5.8 5.8 Petal width (mm) 2.8 2.7 Petal length/width ratio 2.1 2.2 Much longer Much longer than broad than broad No. petals/flower 5.0 5.0 No. sepals/flower 5.0 5.0 Pedicel no. spines Few Many Peduncle anthocyanin Present Present presence Peduncle anthocyanin Medium Very weak intensity ‘PS-1703’ Characteristic (US PP15,151) Petal color N 9.5/90% R to N 9.25/84.2% R White Flower diameter (cm) 1.7 Size Medium Petal Length (mm) 6.4 Petal width (mm) 2.7 Petal length/width ratio 2.4 Much longer than broad No. petals/flower 5.0 No. sepals/flower 5.2 Pedicel no. spines Medium Peduncle anthocyanin Present presence Peduncle anthocyanin Very weak intensity

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, the pest and disease reactions of ‘PS-1852’ differ as described in Table 6: TABLE 6 PEST AND DISEASE REACTIONS ‘PS-1049’ ‘PS-1703’ Characteristic ‘PS-1852’ (US PP10,142) (US PP15,151) Two spotted spider mite Susceptible Susceptible Susceptible Grey fruit mold Susceptible Susceptible Susceptible Powdery mildew Moderately Moderately Moderately Susceptible Susceptible Susceptible Yellow rust Moderately Moderately Moderately Susceptible Susceptible Resistant 

1. A new and distinct raspberry plant known as ‘PS-1852’, as herein described and illustrated by the characteristics set forth above. 